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Backlight driving circuit, backlight driving control method and display device

A technology of backlight driving circuit and driving voltage, applied in static indicators, instruments, etc., can solve the problems of reducing the lighting time, reducing the maximum brightness of the backlight source, etc.

Active Publication Date: 2021-02-19
KUSN INFOVISION OPTOELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The multiple light bars are turned on in turn to reduce the lighting time of each light bar and reduce the maximum brightness of the backlight.

Method used

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  • Backlight driving circuit, backlight driving control method and display device
  • Backlight driving circuit, backlight driving control method and display device
  • Backlight driving circuit, backlight driving control method and display device

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Embodiment Construction

[0036] Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings. In the various figures, identical elements are indicated with similar reference numerals. For the sake of clarity, various parts in the drawings have not been drawn to scale. Also, some well-known parts may not be shown.

[0037] In the following, numerous specific details of the present invention are described in order to provide a clearer understanding of the present invention. However, the invention may be practiced without these specific details, as will be understood by those skilled in the art.

[0038] figure 1 A schematic structural diagram of a backlight driving circuit according to an embodiment of the present invention is shown. like figure 1 As shown, the backlight driving circuit 1000 includes: a backlight driver 100 and a controller 200 . Wherein, the controller 200 includes control units arranged in an array, and the control units are arr...

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Abstract

The invention discloses a backlight driving circuit, a backlight driving control method and a display device, and the backlight driving circuit comprises a backlight driver which is used for providinga driving voltage; a controller which comprises a plurality of control units arranged in an array, wherein the plurality of control units respectively receive the driving voltage, the plurality of control units are arranged corresponding to a plurality of light bars. Each control unit comprises an enabling end and a driving end, the enabling end receives an enabling signal, the driving end receives a dimming control signal, and when the enabling signal is valid, the dimming control signal is subjected to cyclic shift processing to obtain a first control signal, when the first control signal is valid, the driving signal is provided for the light bar corresponding to the control unit, and when the enable signal is invalid, the dimming control signal is used as a second control signal, and when the second control signal is valid, the driving signal is provided for the light bar corresponding to the control unit. According to the backlight driving circuit, the manufacturing cost of a backlight system is reduced, and the maximum brightness of a backlight source is improved.

Description

technical field [0001] The present invention relates to the field of display technology, and more specifically, to a backlight drive circuit, a backlight drive control method, and a display device. Background technique [0002] In a liquid crystal display device, the backlight technology directly affects the power consumption and display quality of the liquid crystal display. As a light emitting diode (LED, light emitting diode) is a characteristic sensitive semiconductor device, it has the characteristics of high luminous efficiency, small size, low power consumption, long service life, safety, reliability, environmental protection and energy saving, etc., so it is gradually used in liquid crystal In the backlight of the display device. [0003] In the related art, the backlight is a direct backlight, and a backlight driving circuit is used to provide a driving voltage for the backlight. The backlight is arranged opposite to the entire display area of ​​the display panel....

Claims

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Application Information

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IPC IPC(8): G09G3/34G09G3/36
CPCG09G3/3413G09G3/36G09G2320/0626
Inventor 张大雷
Owner KUSN INFOVISION OPTOELECTRONICS
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